Scattering of sculpted light in intact brain tissue, with implications for optogenetics

IA Favre-Bulle, D Preece, TA Nieminen, LA Heap… - Scientific reports, 2015 - nature.com
Optogenetics uses light to control and observe the activity of neurons, often using a focused
laser beam. As brain tissue is a scattering medium, beams are distorted and spread with …

Monte Carlo modeling of optical coherence tomography imaging through turbid media

Q Lu, X Gan, M Gu, Q Luo - Applied optics, 2004 - opg.optica.org
We combine a Monte Carlo technique with Mie theory to develop a method for simulating
optical coherence tomography (OCT) imaging through homogeneous turbid media. In our …

Regularized cost function in wavefront shaping for advancing the contrast of structured light

A Kumar, H Jain, A Paul, S Thakur, SK Biswas - Applied Optics, 2024 - opg.optica.org
The cost function in the iterative optimization algorithms is one of the sensitive optimization
controllers that plays a crucial role in feedback based wavefront shaping for constructing …

Advanced modelling of optical coherence tomography systems

PE Andersen, L Thrane, HT Yura, A Tycho… - Physics in Medicine …, 2004 - iopscience.iop.org
Analytical and numerical models for describing and understanding the light propagation in
samples imaged by optical coherence tomography (OCT) systems are presented. An …

Monte Carlo method to model optical coherence propagation in random media

Z Shen, S Sukhov, A Dogariu - JOSA A, 2017 - opg.optica.org
The traditional Monte Carlo technique of photon transport in random media describes only
single point properties of light, such as its intensity. Here we demonstrate an approach that …

Amplitude and phase of tightly focused laser beams in turbid media

CK Hayakawa, V Venugopalan, VV Krishnamachari… - Physical review …, 2009 - APS
A framework is developed that combines electric field Monte Carlo simulations of random
scattering with an angular-spectrum representation of diffraction theory to determine the …

Optical signal degradation study in fixed human skin using confocal microscopy and higher-harmonic optical microscopy

TH Tsai, SP Tai, WJ Lee, HY Huang, YH Liao… - Optics …, 2006 - opg.optica.org
Confocal and nonlinear optical microscopies have been applied for dermatological studies
because of their capability to provide sub-surface three-dimensional images with sub-µm …

Quantitative analysis of light scattering in polarization-resolved nonlinear microscopy

HB De Aguiar, P Gasecka, S Brasselet - Optics express, 2015 - opg.optica.org
Polarization resolved nonlinear microscopy (PRNM) is a powerful technique to gain
microscopic structural information in biological media. However, deep imaging in a variety of …

Electric field Monte Carlo simulations of focal field distributions produced by tightly focused laser beams in tissues

CK Hayakawa, EO Potma… - Biomedical optics …, 2011 - opg.optica.org
The focal field distribution of tightly focused laser beams in turbid media is sensitive to
optical scattering and therefore of direct relevance to image quality in confocal and …

Statistics of partially coherent beams: a numerical analysis

C Mujat, A Dogariu - JOSA A, 2004 - opg.optica.org
We show that by using Monte Carlo simulations, one can study the characteristics of beams
with adjustable spatial coherence properties that propagate through highly scattering media …